XRCWHT-L1-0000-007B6 LED XLamp® XR-C Warm White 3529 SMD Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-007B6 is a CreeLED XLamp® XR-C warm white surface mount LED in 3529 (9073 metric) package format. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The XR-C series has been superseded by the XR-E series, which maintains compatible electrical and mechanical specifications while offering active product status and improved thermal performance.

Key Parameters

Parameter	Value
Manufacturer Part Number	XRCWHT-L1-0000-007B6
Manufacturer	CreeLED, Inc.
Series	XLamp® XR-C
Product Status	Obsolete
Color	White
Flux @ 25°C, 350mA	71 lm (67–74 lm range)
Forward Voltage (Vf) Typical	4.6 V
Test Current	350 mA
Maximum Current	500 mA
Lumens per Watt @ 350mA	58 lm/W
Viewing Angle	90°
Package / Case	3529 (9073 Metric)
Mounting Type	Surface Mount
Size / Dimension	0.354" L × 0.276" W (9.00 mm × 7.00 mm)
Height - Seated (Max)	0.181" (4.60 mm)
Thermal Resistance	12°C/W
Moisture Sensitivity Level (MSL)	4 (72 Hours)
RoHS Status	RoHS Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the XRCWHT-L1-0000-007B6 is determined by the following critical parameters:

Mechanical Compatibility: Package type (3529/9073 metric), footprint dimensions (9.00 mm × 7.00 mm), and seated height (4.60 mm maximum) must remain identical for PCB assembly compatibility without redesign.

Electrical Compatibility: Flux output at 350 mA test current (71 lm nominal, 67–74 lm range), viewing angle (90°), and mounting type (surface mount, SMD) must be maintained.

Thermal Performance: Thermal resistance of the package affects heat dissipation characteristics in the application circuit.

Regulatory Compliance: RoHS compliance and REACH status must be maintained for supply chain and end-market requirements.

All substitute parts listed below are from the CreeLED XLamp® XR-E series, which shares identical mechanical dimensions, package footprint, electrical output specifications, and compliance certifications with the obsolete XR-C series. The primary difference is forward voltage (3.3 V typical for XR-E versus 4.6 V for XR-C) and improved thermal resistance (8°C/W for XR-E versus 12°C/W for XR-C), both of which are favorable for circuit design.

Parameter Comparison

Parameter	XRCWHT-L1-0000-007B6 (Main)	XREWHT-L1-0000-007AA	XREWHT-L1-0000-007B1	XREWHT-L1-0000-007B3	XREWHT-L1-0000-007B5	XREWHT-L1-0000-007B6
Series	XLamp® XR-C	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E
Product Status	Obsolete	Active	Active	Active	Active	Active
Color	White	White, Warm (2700K)	White	White	White	White
Flux @ 25°C, 350mA (lm)	71 (67–74)	71 (67–74)	71 (67–74)	71 (67–74)	71 (67–74)	71 (67–74)
Forward Voltage (Vf) Typical	4.6 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
Test Current	350 mA	350 mA	350 mA	350 mA	350 mA	350 mA
Lumens per Watt @ 350mA	58 lm/W	61 lm/W	61 lm/W	61 lm/W	61 lm/W	61 lm/W
Viewing Angle	90°	90°	90°	90°	90°	90°
Package / Case	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)
Size / Dimension	9.00 mm × 7.00 mm	9.00 mm × 7.00 mm	9.00 mm × 7.00 mm	9.00 mm × 7.00 mm	9.00 mm × 7.00 mm	9.00 mm × 7.00 mm
Height - Seated (Max)	4.60 mm	4.60 mm	4.60 mm	4.60 mm	4.60 mm	4.60 mm
Thermal Resistance	12°C/W	8°C/W	8°C/W	8°C/W	8°C/W	8°C/W
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All listed XLamp® XR-E substitute parts are active products with full manufacturing support and supply availability. The XR-E series maintains identical mechanical compatibility and optical output specifications with the obsolete XR-C series, enabling direct substitution without PCB redesign.

The forward voltage reduction from 4.6 V (XR-C) to 3.3 V (XR-E) results in lower power dissipation and improved efficiency (61 lm/W versus 58 lm/W). The improved thermal resistance (8°C/W versus 12°C/W) provides better heat management in thermal-constrained applications.

All substitute parts carry RoHS compliance and REACH unaffected status, meeting regulatory requirements for EU and global markets. Moisture sensitivity level remains constant at MSL 4 (72 hours), requiring identical handling and storage protocols.

Selection among the available XR-E variants (XREWHT-L1-0000-007B1 through XREWHT-L1-0000-007B9) should be based on color temperature requirements and application-specific performance needs. XREWHT-L1-0000-007AA provides warm white output at 2700K correlated color temperature for applications requiring specific color rendering characteristics.

Frequently Asked Questions (FAQ)

Q: Can XRCWHT-L1-0000-007B6 be directly replaced with XLamp® XR-E parts without circuit modification?

A: Yes. All XR-E substitute parts share identical package dimensions (3529/9073 metric), footprint, seated height (4.60 mm), and optical output (71 lm at 350 mA, 90° viewing angle). The forward voltage difference (3.3 V versus 4.6 V) typically requires only minor current-limiting resistor adjustment in the drive circuit, not PCB redesign.

Q: What is the significance of the forward voltage difference between XR-C and XR-E?

A: The XR-C operates at 4.6 V typical forward voltage, while XR-E operates at 3.3 V. This 0.2 V reduction decreases power dissipation and improves luminous efficiency. Circuit designs using constant-current drivers are unaffected. Designs using series resistors may require resistor value adjustment to maintain target current.

Q: Are all XR-E variants mechanically interchangeable?

A: Yes. All XREWHT-L1-0000-007B series parts (B1 through B9) and XREWHT-L1-0000-007AA share identical mechanical specifications: 3529 package, 9.00 mm × 7.00 mm footprint, 4.60 mm maximum seated height, and surface mount configuration. Differences are limited to color temperature and internal binning.

Q: What is the impact of improved thermal resistance in XR-E parts?

A: XR-E thermal resistance is 8°C/W compared to 12°C/W for XR-C. Lower thermal resistance improves heat dissipation from the LED junction to the PCB, reducing junction temperature at equivalent power levels. This extends LED lifespan and maintains color stability in high-ambient-temperature environments.

Q: Do substitute parts maintain compliance certifications?

A: Yes. All XR-E substitute parts are RoHS compliant and REACH unaffected, matching the compliance status of the obsolete XR-C part. Moisture sensitivity level (MSL 4, 72 hours) remains unchanged, requiring identical component handling and storage conditions.

Q: What is the difference between XREWHT-L1-0000-007AA and other XR-E variants?

A: XREWHT-L1-0000-007AA is specified as warm white with 2700K correlated color temperature, providing warmer color rendering for applications requiring specific color appearance. Other variants (B1–B9) are specified as neutral white without explicit CCT designation. All maintain identical electrical and mechanical specifications.

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